#!/bin/sh
# -*- sh -*-

# load the munin plugin helper
. "$MUNIN_LIBDIR/plugins/plugin.sh"

# if no workingDirectory has been configured
if [ ! "$workingDirectory" ]; then
	# exit with an error
	echo "no workingDirectory configured" >&2
	exit 1
fi

# path to osmosis binary
[ "$osmosis" ] || osmosis="osmosis"

# configuration section
if [ "$1" = "config" ]; then

	echo 'graph_title OSM PostGIS Database Replag'
	echo 'graph_args --base 1000'
	echo 'graph_vlabel seconds behind main database'
	echo 'graph_category osm'

	echo 'lag.label replication lag'
	echo 'lag.draw LINE'

	exit 0
fi

# invoke osmosis to calculate the replication lag
lag=$($osmosis --read-replication-lag workingDirectory="$workingDirectory" 2>/dev/null)
echo "lag.value $lag"

exit 0
